Posted by David G on February 20, 2016 at 16:07:01 from (63.152.108.111):
I got the microprocessor to open the throttle body tonight, so a good success.
The throttle body is closed at 20% PWM, and fully open at 45%, I would rather that be 20% to 80% so I get better resolution. The PWM frequency is 1 kHz, the typical throttle body frequency is about 500 Hz, so I will try slowing that down and see if I can use more of the range of the output. It is a lot more difficult for me to solder small components than when I was in my 20s, think I will have to get one of those lighted magnifiers.
The throttle body has a built in TPS, I will have to get those wired in so it is in closed loop control.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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